Erica Synths PERKONS HD-01 Drum Machine Synthesizer - Manual (Page 8)

ALGO
MODE
3
2
1
VCF
LP
BP
HP
Each voice of the Pērkons consists of 11 identical
controls – 8 potentiometers and 3 toggle switches,
but the sound generation algorithms for each voice
are different – please refer to the table below. Please
note that all controls in the VOICE section are
scanned and their positions can be saved as KITS so
you can recall them and replicate the sounds you
have created.
The LED on top of each voice indicates the outgoing
signal of the voice.
The ALGO switch selects one of three sound design
algorithms.
The MODE switch selects one of three operation
modes within the selected sound design algorithm.
The VCF switch selects analogue voltage controlled
filter (VCF) modes – highpass (HP), bandpass (BP)
and lowpass (LP) respectively.
The TUNE knob sets the initial tune of the voice.
The DECAY knob sets the decay time of the percus-
sion sound. Each voice and algorithm within the voice
may have different decay time settings. Once set all
the way clockwise (10) the voice turns into a drone
oscillator – in the maximum decay setting the voice
oscillates even if the sequencer is stopped.
The PARAM1 and PARAM2 knobs control different
parameters depending on the algorithm selected.
Please, refer to the table below.
The CUTOFF knob controls the cutoff of the VCF.
Please note that each VCF mode may have a
different cutoff knob response. The low-pass filter will
be fully open with the CUTOFF knob all way clockwise,
while the high-pass filter will be fully open with the
CUTOFF knob all way counter-clockwise.
The DRIVE knob is the Dry/Wet control for the
analogue overdrive circuit – with the DRIVE knob all
the way counterclockwise, the overdrive circuit is
bypassed, while with the DRIVE knob all the way
clockwise all signal flows through overdrive circuit
and maximum overdrive is engaged.
The FX SEND knob determines how much of the
signal is routed to any connected external FX unit or
to the built in BBD if no external FX is connected.
The LEVEL knob sets the volume of the relevant voice.
THE SOUND ENGINES
8